If you are handy with a needle, you can make your very own Sisi dress. Here are some patterns for Historical Costume Dresses from the Victorian/crinoline era. Most patterns are from McCall’s, Butterick and Simplicity patterns by Martha Mccain, the Fashion Historian.
DISCLOSURE: I get commissions for purchases made through some of the links in this article.
Butterick Patterns B5831 Misses' Dress,
Size F5 (16-18-20-22-24)
McCall's Women's Victorian Dress Sewing Pattern
by Angela Clayton, Sizes 6-14
Rare Simplicity Fashion Historian Pattern 5442. Misses Szs 6;8;10;12
Simplicity Sewing Pattern 5726 Misses' Historical Undergarments, Petticoat, Chemise, Corset
McCall's Civil War Era Pattern Design 4339
McCall's 4415 Historical Pattern Civil War Era (Gone with the Wind Style)
Simplicity 1818 Misses Costume Sewing Pattern
Butterick P204 Sewing Pattern Misses Historical Victorian Gown Costume
Simplicity Sewing Pattern 2881 Misses Costumes, KK (8-10-12-14)